I am a palaeoecologist and environmental archaeologist who studies human-environment relationships, the evolution of ancient ecosystems and climates. I specialise in the use of fossil beetles but also use an array of other biological proxies. Much of the work covers the present Holocene, especially early agriculture and its impacts on our landscapes and ecosystems. I also work on materials from previous interglacials and the end of the last ice age. Currently, I involved in a major project focusing on the origins and development of Iron age and Medieval crannogs in Ireland and Scotland.